Moon phases origins of months and weeks

The Moon helped shape the month

Counting days between Moon phases helped shape months and may have helped shape weeks. The link remains in language: English “month” and, in Chinese, the same word used for the Moon and the month reflect that connection.

A clay remedy helped bring kaolin into medicine

In the 1800s, enslaved people in the southeastern United States consumed kaolin clay partly to ease diarrhea. Scientific study of this practice helped bring kaolin, the clay’s mineral, into antidiarrheal medicines.

Almost all real numbers have no rule for their digits

Real numbers whose digits can be produced by an algorithm can be put in a list. But all real numbers cannot be listed. That means almost all real numbers have no algorithm that can produce their digits, even though finding a specific example is very difficult.

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Moon phases origins of months and weeks

The Moon helped shape the month

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